Types of Forces

Which of the following object will produce an elastic force?

• A

• B

• C

• D

Gravity is useful _______________>

• when we are walking down a hill.

• when we are cycling uphill.

• when we are climbing a flight of stairs.

• when a box is pushed up a ramp.

What would happen if there was no gravity on Earth?

• You would not move your body.

• You could not talk.

• You would be floating in the air.

• You would stay on the ground.

Which of the following is an example of elastic force?

• Stretching a rubber band.

• Leaves falling down.

• Iron nail attracted to magnet.

• A pair of worn out shoes.

Which of the following is an example of frictional force?

• A pair of worn out shoes.

• Stretching a rubber band.

• Leaves falling down.

• A pair of worn out shoes.

The ping pong ball is rolling on the table. Why do you think the ball stops after a while?

• The ping pong ball rubs against the surface of the table.

• The ping pong ball supports motion.

• Friction is reduced.

• The table is smooth.